# Relationship history for MSHA mine 3301478

Current hierarchy: **Connie S  Stollar → Foureman's Sand & Gravel Inc → Foureman's Gravel**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Foureman's Sand & Gravel Inc → Foureman's Gravel; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gary B  Foureman → Foureman's Gravel; 1950-01-01 to 2018-01-09; source msha-controller-operator-history
- **controller_controls_operator:** Gary B  Foureman → Foureman's Sand & Gravel Inc; 1950-01-01 to 2018-01-09; source msha-controller-operator-history
- **controller_controls_mine:** Connie S  Stollar → Foureman's Gravel; 2018-01-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Connie S  Stollar → Foureman's Sand & Gravel Inc; 2018-01-10 to current/open; source msha-controller-operator-history